Graco Inc 218-745 Check the Electrical Grounding, Installing Optional Remote Fan Air Adapter

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INSTALLATION

Check the Electrical Grounding

WARNING

Proper electrical grounding of every part of your system is essential. For your safety, read the warn- ing section, FIRE OR EXPLOSION HAZARD, on page 5. Ground the system as explained there. Then check your system as explained below.

1.Shut off all air lines to the gun.

2.Shut off the fluid supply to the gun.

3.Have a qualified electrician check the electrical grounding continuity of the spray gun and air hose.

a.With the electrically conductive air hose (BB) connected and properly grounded, use a megohmmeter (AA) (shown in ACCESSORIES section) to measure the resistance between the gun body (Y) and a true earth ground (Z). Use an applied voltage of 500 volts minimum to 1000 volts maximum. See Fig 1.

b.If the resistance is greater than 2 megohms, check the tightness of the ground connections, and be sure the air supply hose ground wire is connected to a true earth ground. If the resis- tance is still greater than 2 megohms, replace the air supply hose.

Installing Optional Remote Fan Air Adapter

NOTE: See ACCESSORIES to order the Remote Fan Air Adapter 181±053 and 90_ Elbow 108±234.

1.Place a wrench on the flats of the valve housing (55) and remove the fan air valve assembly from the gun body (1). See Fig 20, page 23.

KEY

YTurbine Air Inlet

ZTrue Earth Ground

AAOhmmeter

BBGrounded Air Hose

AA

Z

BB

Y

Fig 1

2.Apply PTFE tape to the threads of the remote fan air adapter (part no. 181±053) and install it in the gun body (1). Torque the adapter to 1.1±1.4 NSm (10±12 in-lb).

3.Install the 90_ elbow (part no. 108±234) in the adapter.

4.Install the remote fan air line, solenoid valve, air regu- lator and shut-off valve as instructed in Connect the Air Lines, on page 7.

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Contents Automatic MID-RANGE Electrostatic Rev PPart Number 218±745, Series B This manual contains Important  Table of Contents TermsHazardous Fluid Hazard Hose SafetyEquipment Misuse Hazard Flushing and Cleaning Safety Ventilate the Spray BoothFire or Explosion Hazard HOW the Electrostatic AIR Spray GUN WorksTypical Installation Ventilate the Spray BoothNON±HAZARDOUS Area KEY Hazardous AreaInstallation Mount the GunInstalling Optional Remote Fan Air Adapter Check the Electrical GroundingOperating Checklist OperationFilter the Fluid Spraying OperationAdjust the Spray Pattern AccessoriesMaintenance Daily Care and CleaningFlush the Spray Gun GUN in SolventTo Clean or Change Air Cap and Fluid Nozzle Equipment neededSpray Pattern Troubleshooting Chart Problem Cause Solution Improper Spray PatternGUN Operation Troubleshooting Chart Problem Cause SolutionElectrical Troubleshooting Chart See Check the Electrical GroundingTest Gun Resistance Test Power Supply ResistanceElectrical Tests Test Resistor Stud Resistance Service Gun DisassemblyGun Assembly Note Electrode ReplacementResistor Stud Replacement To install the resistor stud66b Fluid Needle Packing ReplacementBarrel Removal Service Power Cartridge Replacement Turbine Alternator RemovalFan Air Valve Replacement Piston Removal and Repair Disc Regulator ORing Replacement Detail a Ref No Power CartridgeRef No 66, Tool Kit Parts List Old/New Style Resistor Stud and ElectrodeKits Description QtyTechnical Data Service InformationHOW to Order Replacement Parts Assembly Changed Status No. Part No NameAccessories High Volume AIR Regulator 206±199Grounded AIR Supply Hose AIR Hose Adapter 185±493Remote Switch & Signal Light 728±386 Control Panel 218±394 Filter AIR or Paint 202±271Electrostatic System 231±035 Electrostatic System 231±036Graco Warranty and Disclaimers WarrantyImportant Phone Numbers To you 1±800±328±0211 Toll Free